diff --git a/runtime-testsuite/test/org/antlr/v4/test/runtime/descriptors/ParseTreesDescriptors.java b/runtime-testsuite/test/org/antlr/v4/test/runtime/descriptors/ParseTreesDescriptors.java
index 6c9b56d50..ea3374f63 100644
--- a/runtime-testsuite/test/org/antlr/v4/test/runtime/descriptors/ParseTreesDescriptors.java
+++ b/runtime-testsuite/test/org/antlr/v4/test/runtime/descriptors/ParseTreesDescriptors.java
@@ -109,6 +109,11 @@ public class ParseTreesDescriptors {
 		 */
 		@CommentHasStringValue
 		public String grammar;
+
+		@Override
+		public boolean ignore(String targetName) {
+			return !targetName.equals("Java");
+		}
 	}
 
 	public static class NoViableAlt extends BaseParserTestDescriptor {